-al a-a a-c a-t aaa aac aad aal aar aat ac- aca acc acd acl acr act ad- ada adc add adl adr adt al- ala alc ald all alr alt ar- ara arc ard arl arr art at- ata atc atd atl atr att c-- caa cac cad cal car cat cca ccc ccd ccl ccr cct cda cdc cdd cdl cdr cdt cl- cla clc cld cll clr clt cra crc crd crl crr crt cta ctc ctd ctl ctr ctt daa dac dad dal dar dat dca dcc dcd dcl dcr dct dda ddc ddd ddl ddr ddt dl- dla dlc dld dll dlr dlt dra drc drd drl drr drt dta dtc dtd dtl dtr dtt la- laa lac lad lal lar lat lca lcc lcd lcl lcr lct lda ldc ldd ldl ldr ldt lla llc lld lll llr llt lra lrc lrd lrr lrt lta ltc ltd ltl ltr ltt ra- raa rac rad ral rar rat rca rcc rcd rcl rcr rct rda rdc rdd rdl rdr rdt rla rlc rld rll rlr rlt rra rrc rrd rrl rrr rrt rta rtc rtd rtl rtr rtt taa tac tad tal tar tat tca tcc tcd tcl tcr tct tda tdc tdd tdl tdr tdt tla tlc tld tll tlr tlt tra trc trd trl trr trt tta ttc ttd ttl ttr ttt